Remove unused SplitAndAdd function

tools/osx/crosstool/wrapped_clang.cc

@@ -118,26 +118,6 @@ void RunSubProcess(const std::vector<std::string> &args) {
   }
 }
 
-// Splits txt on the first whitespace delimiter, pushing both substring into strs.
-// This is because the wrapped_clang binary is called with arguments like:
-//     wrapped_clang '-isysroot a/path/that might have/spaces' and we need to
-// preserve the path but split the flag and value.
-void SplitAndAdd(const std::string &txt, std::vector<std::string> &strs) {
-  if (txt[0] != '-') {
-    // not a flag, so no need to split anything.
-    strs.push_back(txt);
-    return;
-  }
-  auto first_space = txt.find(' ');
-  auto first = txt.substr(0, first_space);
-    strs.push_back(first);
-  if (first_space == std::string::npos) {
-    return;
-  }
-  auto second = txt.substr(first_space+1, std::string::npos);
-  strs.push_back(second);
-}
-
 // Finds and replaces all instances of oldsub with newsub, in-place on str.
 void FindAndReplace(const std::string &oldsub, const std::string &newsub,
                     std::string *str) {